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1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1562
EXPERIMENTAL STUDY ON FIBER REINFORCED CONCRETE WITH
RECYCLED AGGREGATE REPLACED BY NATURAL AGGREGATE
Akhilesh Gahora1, Prof. Kirti Chandraul2, Prof. Manindra Kumar Singh3
1M.Tech Student Jawaharlal Nehru College Of Technology Rewa, M.P.
2,3Assistant Professor, Dept. of Civil Engineering, J. N. C.T. College, Rewa, M.P., India
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Abstract: Concrete is one of the most important and widely
used material in India in construction field. There are many
developments going on in concrete by utilizing locally
accessible material. The present focus in concrete technology
is towards increasing the strength and durability of concrete
to meet the demands of modern era of construction. The main
aim of the study is the effect of synthetic fiber in concrete. FRC
has high tensile strength and fire resistance property which
reduces the loss of damage during fire accidents. In this thesis
the strength property were studied by comparing size and
proportions of fiber. The polypropylene fiber is used size is
10mm with the proportions of 0%, 0.1% and 0.15% of cement
by weight. The study of making the concrete of low cost was
also done by utilizing locally available aggregates from scrap
buildings in replacement of natural aggregate. The
replacement of natural aggregate is done in various
proportions like 0%, 5% and 10%, according to previous
research papers the proportions are taken. The comparison
between all the above proportions were done and tested for its
properties. The workability, compression strength and tensile
strength were obtained at 7th day, 14th day and 28th day of
curing. The result are compared for the best conclusion.
I. INTODUCTION
The rising demand of infrastructure is stressing our
available natural resources. In order to preserve the
resources for our upcoming generations it is highly
recommended that these resources to be used wisely. On the
other hand the waste material generated by demolition of
abandoned structures and construction water is creating
serious threats to our environment.
The growth in various types of industries together with
population growth has resulted in enormous increase in
economy worldwide. This increase of the population and
goods increases various types of loads.
Increase in the industrial activities has resulted in enormous
increase in production of various types of waste material,
not only India but all over world. The creation and disposal
of non-decaying waste material such as brick, gravels etc.
have been posing serious problem to the environment in
developed as well as in developing countries. The buildings
are used across the world for industrial as well as
residential purpose. Crushing at these waste materials at the
construction site with the help of portable crushers
minimizes the costs of construction and also the pollution
generated while transporting waste and new material to and
from a quarry. So we use the waste materials from various
construction and recycle them to make a new construction.
The recycled aggregate are used as a partial replacement of
coarse aggregate. Use of fiber increases the strength of
concrete. There are several fibers available which are in use
in present time.
OBJECTIVES
The main objects covered in this project work are mentions
as follows:
 To study the strength property of fiber reinforced
concrete.
 To reduce the cost of constructions by using waste
aggregate from demoralized building.
 To make environment free from demolished concrete
waste.
 To optimize the maximum use of waste aggregate.
II. LITERATURE REVIEW
Limbachiya and Leelawat (2000) found that recycled
concrete aggregate had property of 7 to 9% lower relative
density and 2 times higher water absorption than natural
aggregate. According to their test results, it shown that there
was no effect with the replacement of 30% coarse recycled
concrete aggregate used on the ceiling strength of concrete.
It also mentioned that recycled concrete aggregate could be
used in high strength concrete mixes with the recycled
concrete aggregate content in the concrete. Sagoe,

2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1563
Brown and Taylor (2002) stated that the difference
between the characteristic of fresh and hardened recycled
aggregate concrete and natural aggregate concrete is
relatively narrower than reported for laboratory crush
recycled aggregate concrete mixes. There was no difference
at the 5% significance level in concrete compressive and
tensile strength of recycled concrete and control normal
concrete made from natural aggregate In the same year
They concluded that the properties and the strength
characteristic of recycled aggregate concrete were
deficiency when compared to the specimens that made by
the natural aggregate.
A. M. Shende and A. M. Pande.: Critical investigation for M-
40 grade of concrete having mix proportion 1:1.43:3.04 with
water cement ratio 0.35 to study the compressive strength,
flexural strength, Split tensile strength of steel fiber
reinforced concrete (SFRC) containing fibers of 0%, 1%, 2%
and 3% volume fraction of hook tain. Steel fibers of 50, 60
and 67 aspect ratio were used. A result data obtained has
been analyzed and compared with a control specimen (0%
fiber). A relationship between aspect ratio vs. Compressive
strength, aspect ratio vs. flexural strength, aspect ratio vs.
Split tensile strength represented graphically.
The aggregate is the main ingredient which strengthen the
concrete. Many researchers have found that the demoralized
building the aggregate can be reused by cleaning the used
aggregate. The strength of concrete will be reduced due to
use of used aggregate but it can be improved by using
polypropylene fiber concrete. Thus in this thesis the
strength is improved by using fibers of size 10mm with
proportion of 0%, 0.1% and 0.15% of cement by weight. To
reduce the cost of construction aggregates are replaced by
waste aggregate with proportion of 0%, 5% and 10%. Test
for compressive and tensile strength were done at 7th day,
14th day and 28th day.
III. MERATIAL AND METHODOLOGY
Portland cement:
On mixing the water, cement hardens and hence all the
ingredients are bounded together. Portland cement is the
most common cement used and is composed of alumina,
silica, lime, iron, and gypsum. Small amounts of other
ingredients are also included.
Aggregates:
Most of the concrete mixtures consist of both coarse and fine
aggregates, and help in increasing the strength of concrete
with respect to what cement can provide alone. Nowadays,
sand, gravel, crushed stone, recycled materials, including
blast furnace slag, glass (mostly for decorative purposes),
and ground-up concrete are used as aggregates.
Water:
The water in the concrete mix should be clean and free of
impurities. The change in water content with respect of
cement decides the properties of the cement like how easily
the concrete flows, but also affects the final strength of the
concrete. Excess water implies to easier flow of concrete,
but decreases its strength.
Polypropylene Fiber
Polypropylene fibers for utilizing in textiles, carpet, and tire
cord are produced by extruding molten polymer through
spinnerets and stretching to their final thickness and weight.
The polymer melt must be homogeneous, gel free, and
without oversize additive agglomerates to achieve high
quality fiber and yields. Filtration of the procedure
feedstreams, additive slurries, and polymer melt itself are
important to help eliminate fiber breaks and enhance fiber
strength and uniformity. Not only is fiber worth improved,
but manufacturing rates can be higher with less procedure
downtime.
RE USE OF DEMORALIZED AGGREGATE IN CONCRETE
The application of Aggregate Concrete in construction has
started since end of world war-2 by demolished concrete. In
the 1970s, the United States began to reintroduce the use of
RAC in non-structure uses such as fill materials, foundations,
and base course.
Currently India has taken major initiatives in developing the
infrastructure such as buildings, highways, power projects
and industrial structure etc.
With the demolition of abandoned structure the increase in
debris is a very serious threat, causing environmental
problems. To protect the environment this demolition
debris can be crushed to form Recycled Aggregate. On
studying the nature of this Recycled Aggregate it has been
found that by replacing natural aggregate with Recycled
Aggregate to some extent the property of concrete remains
unchanged. Now a day Recycled Aggregate is being used in
developing the infrastructure such as highways, buildings,
industrial structures and power projects.

3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072
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IV. RESULT ANA ANALYSIS
All the experiments were performed as per IS Standards test
procedures. The results are noted down in the tabular
format.
SIEVE ANALYSIS OF COURSE AGGREGATE
The aggregate which pass through 75 mm IS sieve and
entirely retain on 4.75 mm IS sieve is known as coarse
aggregate.
Sieve analysis of course aggregate:
S.
No
.
I.S.
Siev
e
No.
Weight
Retaine
d (g)
Cumulativ
e Weight
Retained
(g)
Cumulativ
e %
Retained
on Each
Sieve
%Passing
Remarks%
1 40 0 0 0 100
FM=3.28%
2 25 220 220 4.4 95.
6
3 20 2130 2350 47 53
4 16 1670 4020 80.4 19.
6
5 10 835 4855 97.1 2.9
6 4.75 115 4970 99.4 0.6
7 Pan 0 0 0 0
Fineness Modulus of Coarse Aggregates:
FM = Sum of cumulative % retained = 3.28 %
100
IMPACT TEST FOR NATURAL AGGREGATE:
Impact test for Natural Aggregate:
S.
no.
Total
wt. of
dry
sample
(A) in
gm
Wt. of
aggregate
retained
2.36 mm
sieve in
gm
Wt. of
aggregate
passing
2.36 mm
sieve in
gm (C)
Aggregate
impact
value=
(C/A)x100
1. 398 276 67 16.83
2. 356 287 76 21.34
Aggregate impact value (%) = 19.1
CRUSHING TEST FOR NATURAL AGGREGATE:
Crushing test for Natural Aggregate:
S.
No.
Total
wt. of
dry
sample
in gm
Wt. of
aggregate
retained
on 2.36
mm sieve
in gm
Wt. of
aggregate
passing
2.36 mm
sieve in
gm
Aggregate
crushing
value
1 3000 2590 410 13.67
2 3456 2780 676 19.56
CA crushing value ( % ) = 19.61
COMPRESSIVE STRENGTH TEST WITH 10MM SIZE FIBER
Concrete
mix
Quantity
of fiber
used
7-days
Average
(MPA)
14-days
Average
(MPA)
28-days
Average
(MPA)
0%
0 16.8 23.8 29
0.1 17.7 25.5 30.7
0.15 18.7 26.6 31.5
5%
0 17 23.47 27.1
0.1 17.9 23.8 28.5
0.15 18.3 24.6 29.7
10%
0 14.9 17.4 20.1
0.1 15.56 17.9 21.7
0.15 16.4 18.5 22.7

4. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1565
COMPRESSIVE STRENGTH OF 10MM LENGTH PP FIBER
From Graph, the recycled aggregate replacing partially in
the place of natural aggregate. The amount of natural
aggregate left in India is very less now due to high
construction rate thus one of the alternate material should
be found. Old buildings are getting demoralized to construct
new building, the disposal of scrap is an environmental thus
the aggregate can be cleaned and washed to reuse. It is
replaced in many proportions such as 0%, 5% and 10% with
the PP fiber of length 10mm with three proportions 0%,
0.1% and 0.15% of cement by weight. The naming shows
the ratios. The standard compressive strength were found at
28th day of curing i.e 29 N/mm2, 30.7 N/mm2, 231.5
N/mm2, 27.1 N/mm2, 28.5 N/mm2, 29.7N/mm2, 20.1
N/mm2, 21.7 N/mm2 and 22.7 N/mm2 for C, R1, R2, R3, R4,
R5, R6, R7 and R8 respectively. The maximum compressive
strength is which maximum amount of fiber i.e 0.15% is
added in natural aggregate concrete. But when aggregate is
replaced with waste aggregate by 5% gives result for M20
Grade of concrete, the result is 18.3 N/mm2, 24.6 N/mm2
and 29.7 N/mm2 at the age of 7th, 14th and 28th day of
curing respectively. From the above result we got that the
use of fiber with recycled aggregate increases the strength.
TENSILE STRENGTH TEST
Concrete
mix
Quantity
of fiber
used
7-days
Average
(MPA)
14-days
Average
(MPA)
28-days
Average
(MPA)
0%
0 3.3 4.3 4.76
0.1 3.9 4.69 5.48
0.15 4.2 4.77 5.53
5% 0 3.16 4.37 4.6
0.1 3.76 4.55 4.9
0.15 4.17 4.77 5.26
10%
0 3.01 3.6 3.83
0.1 3.08 3.8 4.15
0.15 3.12 4 4.6
SPLIT TENSILE STRENGTH OF 10MM LENGTH PP FIBER
From Graph 8, the recycled aggregate replacing partially in
the place of natural aggregate. The amount of natural
aggregate left in India is very less now due to high
construction rate thus one of the alternate material should
be found. Old buildings are getting demoralized to construct
new building, the disposal of scrap is an environmental thus
the aggregate can be cleaned and washed to reuse. It is
replaced in many proportions such as 0%, 5% and 10% with
the PP fiber of length 10mm with three proportions 0%,
0.1% and 0.15% of cement by weight. The naming shows
the ratios. The standard compressive strength were found at
28th day of curing i.e 4.76 N/mm2, 5.48 N/mm2, 5.53
N/mm2, 4.6 N/mm2, 4.9 N/mm2, 5.26 N/mm2, 3.83 N/mm2,
4.15 N/mm2 and 4.6 N/mm2 for C, R1, R2, R3, R4, R5, R6,
R7 and R8 respectively. The maximum compressive strength
is which maximum amount of fiber i.e 0.15% is added in
natural aggregate concrete. But when aggregate is replaced
with waste aggregate by 5 % gives result for M20 Grade of
concrete, the result is 4.17 N/mm2, 4.77 N/mm2 and.5.26
N/mm2 at the age of 7th, 14th and 28th day of curing
respectively. From the above result we got that the use of
fiber with recycled aggregate increases the strength.
14
17
20
23
26
29
32
7 DAY 14 DAY 28 DAY
SplitTensileStrengthof
concretewith(N/mm2)
COMBINED COMPRESSIVE
STRENGTH OF CONCRETE
C
R1
R2
R3
R4
3
4
5
6
7 DAY 14 DAY 28 DAY
SplitTensileStrengthof
concretewith(N/mm2)
COMBINED SPLIT TENSILE
STRENGTH OF CONCRETE
C
R1
R2
R3
R4
R5
R6
R7
R8

5. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 10 | Oct -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1566
V. CONCLUSION
1. The ingredients of is having strength as per IS
standards.
2. The Compressive Strength of low cost fiber
reinforced concrete of 10mm size in proportion of 0%, 0.1%
and 0.15% at 28th day is: For 0% replacement of aggregate
29 MPa, 30.7 MPa and 31.5 MPa, for 5% replacement of
waste aggregate by natural aggregate is 27.1 MPa, 28.5 MPa
and 29.7 MPa,, for 10% replacement of waste aggregate by
natural aggregate is 20.1 MPa, 21.7 MPa and 22.7 MPa
respectively.
3. The Tensile Strength of low cost fiber reinforced
concrete of 10mm size in proportion of 0%, 0.1% and 0.15%
at 28th day is: For 0% replacement of aggregate 4.76 MPa,
5.48 MPa and 5.53 MPa, for 5% replacement of waste
aggregate by natural aggregate is 4.6 MPa, 4.9 MPa, 5.26
MPa, for 10% replacement of waste aggregate by natural
aggregate is 3.83 MPa, 4.15 MPa and 4.6 MPa respectively.
4. Both results of compressive and tensile strength is
decreasing as natural aggregate is replaced by waste
aggregate from demoralizes structure. But the strength is
above M20 grade of concrete.
5. Polypropylene fiber of 6mm size with proportion of
0.15% of cement by weight gives better result when
replaced with re used aggregate by natural aggregate by 5%.
The strength is above M25 grade of concrete.
6. As percentage of fiber increasing strength of
concrete increasing.
IV. REFERENCE
1. Buyle-Bodin F. and Hadijieva-Zaharieva R., 2002,
Influence of industrially produced recycled aggregates on
flow properties of concrete, Materials and Structures,
Volume 35, September-October 2002, p504-509.
2. Kajima Corporation Research and Development,
2002, Recycled Aggregate Concrete for Within-Site
Recycling, viewed 9 September 2004.
3. Limbachiya M. C., Leelawat T. and Dhir R. K., 2000,
Use of recycled concrete aggregate in high- strength
concrete, Materials and Structures, Volume 33, November
2000. [4]. Building Innovation and Construction Technology,
1999, Recycled Hits, New High, viewed 30 August 2004.
BIOGRAPHIES
Akhilesh Gahora
M.Tech Student
J.N.C.T. Rewa, M.P., India
Prof. Kirti Chandraul
Assistant Professor
J.N.C.T. Rewa, M.P., India
Prof. Manindra Kumar Singh
Assistant Professor
J.N.C.T. Rewa, M.P., India